WEBIn the transmit path, simple R-C filter might suffice. In the receive path apply debounce filters to block transient remnants from. EFT events. The first R-C stage filters positive, the second stage negative transients. Example: T =. EFT 400ns (positive and negative transients), Inverter = SN74LVC2G14, Diode = BAT54, C = 100pF, R.